public class DownWallpaper extends JFrame implements ActionListener{

    private JButton down = null;

    public DownWallpaper(){        down =  new JButton("下载手机壁纸");        down.setFont(new Font("微软雅黑",Font.ITALIC,20));        down.addActionListener(this);        this.setResizable(false);        this.add(down);        this.setTitle("高清壁纸下载");        this.setSize(250, 150);        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        this.setLocationRelativeTo(null);        this.setVisible(true);    }

    @Override    public void actionPerformed(ActionEvent e) {       if (e.getSource()==down) {           try {               JOptionPane.showMessageDialog(this, "正在下载请勿关闭主窗体！");               JOptionPane.showMessageDialog(this, "详细信息请查看：https://sj.enterdesk.com/");               JOptionPane.showMessageDialog(this, "下载完成后请到：d:/img下查看");            load("https://sj.enterdesk.com/");        } catch (Exception e1) {            e1.printStackTrace();        }

       }     }    public static void main(String[] args) {         new DownWallpaper();

    }

    /**     * 加载链接     * @param urls     * @throws Exception     */    public static void load(String urls) throws Exception{        Connection connect = Jsoup.connect(urls);        Document document = connect.get();        Elements links = document.getElementsByTag("img");        //循环爬取图片        for(Element link : links){            String url = link.attr("src");//下载的url            String endWith = url.substring(url.lastIndexOf("."));//文件后缀名            String fileName = link.absUrl("alt").substring(link.absUrl("alt").lastIndexOf("/"));//文件名            download(url,endWith,fileName);        }        //获取所有的<li>        Elements select = document.select("a");        Elements addClass = select.addClass("next_p");        for (Element element : addClass) {            if (element.text().equals("下一页")) {                //获取超链接                String attr = element.attr("href");                //递归循环下载                load(attr);            }else{                continue;            }

        }

    }

    /**     * 下载图片     * @param url     */    public static void download(String url,String endWith,String fileName) throws Exception{            File file = new File("d:/img/");            if (!file.exists()){                file.mkdir();            }else{                file.delete();                file.mkdir();            }            URL url2 = new URL(url);            InputStream is = url2.openConnection().getInputStream();            BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file.getPath()+fileName+endWith));            byte[] bs = new byte[2048*2048];            while((is.read(bs))!=-1){                bos.write(bs);            }            bos.flush();           if(is != null) is.close();           if(bos != null) bos.close();    }

}